New bis-oxadiazole compounds

Details New bis-oxadiazole compounds New bis-oxadiazole compounds

1973-10-17

1976-03-30

Demers, Arthur P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2523012W, 260240R, 2602401, 260307G, 260240CA, 2602409, C07D41310

Patent

active

039474100

ABSTRACT:
The present invention provides new bis-oxadiazole compounds of the formula ##EQU1## wherein R.sub.1 and R.sub.1 ' independently of one another represent hydrogen, an optionally non-chromophorically substituted aliphatic, cycloaliphatic or araliphatic radical with up to 18 carbon atoms or an optionally non-chromophorically substituted, at most binuclear, carbocyclic or heterocyclic aromatic radical and Q represents a radical ##SPC1##
Wherein a represents hydrogen, halogen, alkyl with 1 to 4 carbon atoms, alkoxy with 1 to 4 carbon atoms, sulpho groups or their salts or an optionally substituted sulphamoyl group or both radicals a together with the diphenylene radical represent a 9,10-dihydrophenanthrene ring and the benzene ring A can optionally be substituted by halogen, alkyl with 1 to 4 carbon atoms, sulpho groups or their salts or an optionally substituted sulphamoyl group or can possess a fused-on six-membered ring.
The new compounds are useful optical brighteners for high-molecular organic materials.

REFERENCES:
patent: 2765304 (1956-10-01), Siegrist et al.
patent: 3274184 (1956-09-01), Thompson et al.
patent: 3481949 (1969-12-01), Lynch et al.
patent: 3600383 (1971-08-01), Atkinson
patent: 3644345 (1972-02-01), Siegrist et al.
patent: 3830848 (1974-08-01), Siegrist

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